Very popular among economists but gaining popularity because when you travel abroad your money buys less foreign money, making travel overseas more expensive than before
-Joe: Hey bud what are you doing this summer?
-Ken: Going to London to visit family!
-Joe: Whoa, nice, I bet you're going to spend a lot of money there
-Ken: Yeah, I got some savings but my money ain't worth Sh**t over there, cant buy many things with these U.S. peso over there!!!